Carbureter for internal-combustion engines.



S. WER-THEIMER.

GARBURETER FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED NOV. I8. 1916.

1,228,272., Patented May 29, 1917.

SYDNEY WERTHEIMER, OF LONDON, ENGLAND.

CARBUIRETER FOB, INTERNAL-COMBUSTION EN GINES'.

Specification of Letters Patent.

Patented May 29, 1917.

Application filed November 18,1916. Serial No. 132,179.

To all whom it may concern:

Be it known that I, SYDNEY WERTHEIMER, a subject of the King of Great Britain and Ireland, residing at 57 Long Acre, London, W. G, England, have invented certain new and useful improvements in Carburetors for InternalCo1nbustio1i Engines, of which the following is a specification.

This invention relates to carburetors such as are employed with internal. combustion or explosion motors and refers to carburetors provided with choke tubes or chambers which may be arranged vertically or horizontally.

The chief object of the invention is to ]f)1'OViClO means for insuring, under all conditions of running, the best possible results from the carbureter.

Various attempts and endeavors have been made for controlling the supply of air to mix with the liquid coming from the jet or jets of the carbureter and provision has been made for providing this air supply at various points in the passages, conduits or their equivalent between the carburetor and the motor; similar provisions have been proposed with relation to the carbureter itself.

Some of the schemes hitherto proposed have given improved results but require skilled attention in their adjustment and regulation and call for or require frequent tuning by more or less skilled mechanics.

In accordance with the present invention, provision is made for supplying the air desired, to the fuel around the jet or jets in the choke tube or chamber that is to say at the part where an intimate mixture of air and liquid will be insured and means are also provided for readily and easily varying the proportion of air in the combustible mixture at will.

It is proposed by the present invention to make a portion of the choke tube movable, adjustable or regulatable contiguous to the fuel jet or jets so that air may enter by an opening thus formed around the jets in an even and continuous stream in the proportion required and thus mix with the liquid fuel immediately it issues from the said jet or jets.

Referring to the accompanying drawingsz- Figure 1 is an elevation of a carburetor embodying the present invention.

Fig. 2 is an elevation viewed at right angles to Fig. 1 showing a portion of the carbureter.

Fig. 3 is a plan partly in section of Fig. 1, and

Fig. l is a sectional elevation on the section line shown in Fig. 1.

Fig. 5 is a detail view of an operating lever used with the invention.

The carburetor illustrated to which the present invention is shown applied is one in which the choke tube A is disposed vertically and which has the usual air inlets B through which air will be drawn in,in accordance with the suction action of the engine. According to the embodiment of the invention shown, to provide for an additional controllable air supply the body of the tube A, which is a fixture or is stationary, and its surrounding tube witlrwhich it can be integral are open or cut away at A so as to leave at A a large opening or space above the bell shaped or usual inlet passages B and contiguous to the jet D or jets and this cut away or open portion A is inclosed in or encircled by a sleeve G which can be moved or adjusted relatively to the jet D.

The sleeve (1 thus controls the size of opening contiguous to the fuel jet and the amount of air that can enter at this part, and by adjusting the sleeve G which forms part of the lower end of the choke tube the amount of air entering can be varied at will, and in accordance with the requirements of the running conditions of theengine.

The construction shown which is that of an existing carbureter does not permit of the opening continuing entirely around the tube A, but it may be so continued where permissible in which case the part G will be annular and entirely encircle the tube A at the cut away part.

By thus introducing. the air into the choke tube by a large single opening contiguous to or around the jet and by means which can be readily adjustable, the air is caused to enter evenly aroiuid the jet in the best manner to insure an intimate and consistent mixture of a richness or quality in accordance with various conditions of running of the engine.

By employing a large single opening for the air, an even, continuous flow can be obtained which gives results that cannot be obtained by one or more holes or the like.

In accordance with the invention the ad j ustinent of the tube and the size of the air inlet can be efiected readily and quickly and without necessitating the driver of the car leaving his seat and a convenient means for accomplishing this, as applied to the adjustable sleeve C shown comprise a Bowden wire or cable E. The sleeve G has slots 0 through which project headed studs or screws F secured to the body of the tube A. As the Bowden cable is operated in the usual way by a lever E to which one end of one member of the Bowden cable is secured the sleeve 0 moves on the guide studs F. The end of the inner member of the cable is secured to the member C and the similar end of the outer member to the body of the carburetor as shown in Fig. 1. The lever E is retained in its adjusted position against the action of a spring G by a pawl E thereon which acts on a fixed circular ratchet E and the sleeve is returned to its lowest position when the lever and pawl are released by the spring G which constantly acts to retain the sleeve in the position shown.

What I claim as new and desire to secure by Letters Patent of the United States is 1. In a carbureter for an internal combustion engine, the combination with a jet, of a choke tube surrounding the jet, an open air supply for the choke tube below the jet, the choke tube having a large single opening at its restricted part contiguous to and surrounding the jet, a slidable sleeve adapted to control the passage of air through said opening in the choke tube, guides for the sleeve on the outside of the choke tube, supporting the sleeve out of contact with the tube, and means for moving the sleeve.

2. A carbureter for an internal combustion engine having in combination the following elements, a jet, a choke tube surrounding the jet, and having a large single opening contiguous to and surrounding the jet, an outer casing for the choke tube, having an opening corresponding to that in the choke tube, a sleeve mounted on said outer casing, and adapted to be moved over said openings to control passage of air therethrough, guides for the sleeve, a cable for moving the sleeve in one direction, and a spring for returning the sleeve.

In witness whereof, I have hereunto set my hand this 29th day of September, 1916.

SYDNEY WERTHEIMER.

Witnesses:

CHARLES KEEN, JAMEs M. ELLIOTT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, \Vashington, D. C. 

